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Digital worldwide can use Audience reach as a key performance indicator (KPI) for the television/radio campaigns. The Audience Reach KPI means the number of individuals in a “target market(s) who were exposed at least once to an advertisement over a certain period of time divided by the total number of individuals in targeted market, as a percentage.” This will allow them to implement a feedforward control method. Digital worldwide can purchase airtime during certain times of the day to ensure their Audience Reach percentage gets as high as possible.

For the online marketing campaign, can track time on the webpage. This is usually collected through Cookies and report through the webpage analytics. A concurrent control method is to track the webpage details in real time. This allows digital worldwide to make any changes right as they are seeing the problem.